<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="app">
        <!-- 单选框不论多少个，都只有一个data数据 -->
        <input type="radio" name="sex" value='男' v-model="sex"> 男
        <input type="radio" name="sex" value='女' v-model="sex"> 女
    </div>

    <script>
        Vue.config.productionTip = false;
        const vm = new Vue({
            el:'#app',
            data(){
                return{
                    sex:""
                }
            }
        })
    </script>
</body>
</html>